diff options
Diffstat (limited to 'libsigsegv/src/fault-macosdarwin5-powerpc.c')
| -rw-r--r-- | libsigsegv/src/fault-macosdarwin5-powerpc.c | 124 |
1 files changed, 0 insertions, 124 deletions
diff --git a/libsigsegv/src/fault-macosdarwin5-powerpc.c b/libsigsegv/src/fault-macosdarwin5-powerpc.c deleted file mode 100644 index a2f59d8f..00000000 --- a/libsigsegv/src/fault-macosdarwin5-powerpc.c +++ /dev/null @@ -1,124 +0,0 @@ -/* Fault handler information subroutine. MacOSX/Darwin5/PowerPC version. - * Taken from gcc-3.2/boehm-gc/os_dep.c. - * - * Copyright 1988, 1989 Hans-J. Boehm, Alan J. Demers - * Copyright (c) 1991-1995 by Xerox Corporation. All rights reserved. - * Copyright (c) 1996-1999 by Silicon Graphics. All rights reserved. - * Copyright (c) 1999 by Hewlett-Packard Company. All rights reserved. - * - * THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY EXPRESSED - * OR IMPLIED. ANY USE IS AT YOUR OWN RISK. - * - * Permission is hereby granted to use or copy this program - * for any purpose, provided the above notices are retained on all copies. - * Permission to modify the code and to distribute modified code is granted, - * provided the above notices are retained, and a notice that the code was - * modified is included with the above copyright notice. - */ - -/* Decodes the machine instruction which was responsible for the sending of the - SIGBUS signal. Sadly this is the only way to find the faulting address - because the signal handler doesn't get it directly from the kernel (although - it is available on the Mach level, but dropped by the BSD personality before - it calls our signal handler...) - This code should be able to deal correctly with all PPCs starting from the - 601 up to and including the G4s (including Velocity Engine). */ -#define EXTRACT_OP1(iw) (((iw) & 0xFC000000) >> 26) -#define EXTRACT_OP2(iw) (((iw) & 0x000007FE) >> 1) -#define EXTRACT_REGA(iw) (((iw) & 0x001F0000) >> 16) -#define EXTRACT_REGB(iw) (((iw) & 0x03E00000) >> 21) -#define EXTRACT_REGC(iw) (((iw) & 0x0000F800) >> 11) -#define EXTRACT_DISP(iw) ((short *) &(iw))[1] - -static void * -get_fault_addr (struct sigcontext *scp) -{ - unsigned int instr = *((unsigned int *) scp->sc_ir); - unsigned int *regs = &((unsigned int *) scp->sc_regs)[2]; - int disp = 0; - int tmp; - unsigned int baseA = 0; - unsigned int baseB = 0; - unsigned int addr; - unsigned int alignmask = 0xFFFFFFFF; - - switch (EXTRACT_OP1 (instr)) - { - case 38: /* stb */ - case 39: /* stbu */ - case 54: /* stfd */ - case 55: /* stfdu */ - case 52: /* stfs */ - case 53: /* stfsu */ - case 44: /* sth */ - case 45: /* sthu */ - case 47: /* stmw */ - case 36: /* stw */ - case 37: /* stwu */ - tmp = EXTRACT_REGA (instr); - if (tmp > 0) - baseA = regs[tmp]; - disp = EXTRACT_DISP (instr); - break; - case 31: - switch (EXTRACT_OP2 (instr)) - { - case 86: /* dcbf */ - case 54: /* dcbst */ - case 1014: /* dcbz */ - case 247: /* stbux */ - case 215: /* stbx */ - case 759: /* stfdux */ - case 727: /* stfdx */ - case 983: /* stfiwx */ - case 695: /* stfsux */ - case 663: /* stfsx */ - case 918: /* sthbrx */ - case 439: /* sthux */ - case 407: /* sthx */ - case 661: /* stswx */ - case 662: /* stwbrx */ - case 150: /* stwcx. */ - case 183: /* stwux */ - case 151: /* stwx */ - case 135: /* stvebx */ - case 167: /* stvehx */ - case 199: /* stvewx */ - case 231: /* stvx */ - case 487: /* stvxl */ - tmp = EXTRACT_REGA (instr); - if (tmp > 0) - baseA = regs[tmp]; - baseB = regs[EXTRACT_REGC (instr)]; - /* Determine Altivec alignment mask. */ - switch (EXTRACT_OP2 (instr)) - { - case 167: /* stvehx */ - alignmask = 0xFFFFFFFE; - break; - case 199: /* stvewx */ - alignmask = 0xFFFFFFFC; - break; - case 231: /* stvx */ - case 487: /* stvxl */ - alignmask = 0xFFFFFFF0; - break; - } - break; - case 725: /* stswi */ - tmp = EXTRACT_REGA (instr); - if (tmp > 0) - baseA = regs[tmp]; - break; - default: /* ignore instruction */ - return (void *) 0; - } - break; - default: /* ignore instruction */ - return (void *) 0; - } - - addr = (baseA + baseB) + disp; - addr &= alignmask; - return (void *) addr; -} |